Auxiliary air-inlet device



April 20., 1926.

E%A.MKEEVER AUXILIARY AIR INLET DEVICE Filed Nov. 15, 1924 Que mugsspecification and claims.

Patented Apr. 20, 1926.

UNITED STATES 1,581,461 PATENT orrlcs. I

ELDRIDGEA. MQKEEVER, or CATASAUQUA, r nNsYLvANrA.

AUXILIARY AIRJiNLET DEVICE.

, Application filed'Novem'ber 13, 1924; Sri'a1 No. 749,758..

Tod-Zlwhom it mag concern:

Be it known that ELDRIDGE A. MCKEEVER', a citizen of "the United States,residing at Catasauqua, in the county of Lehigh and State ofPennsylvania, has invented certain new anduseful Improvements inAuxiliary Air-Inlet Devices, of which the following is a specification.

This invention relates to new and useful improvements in attachments forcarburetors, and more particularly to an air gasket therefor, theprimary object being to provide 'a device of this character which will,when effectively applied, increase the power ofthe motor, increase themileage and eliminate carbon to a considerable extent. I

A further object resides in providing a device of this characterinterposed between the carburetor and the intake manifold which willpurify and thoroughly vaporize the gasoline, under which conditions itis a well'known fact that a motor will run perfectly and avoidoverheating.

Still another objectof the invention ,resides in providing an air intakepipe in connection with a gasket which is provided with a slot arrangedin such a manner that substantially an air curtain is caused to ex tendacross the opening of the gasket, when the motor is in operation, sothat the gasoline will be thoroughly mixed with the air and vaporized asit is drawn into the manifold. e 1 Still another object of the inventionresides in providing a device of this character which is simple anddurable in construction, inexpensive to manufacture, and one which maybe considered as effective and useful in operation.v V

WVith these and other objects in view my invention consists in the novelfeatures of construction, combination and arrangement of parts as willbe hereinafter referred to and more particularly pointed out in the Inthe accompanying drawing forming a part :of this application,

Figure 1 isa side elevation, of an intake manifold and carburetorshowing my improved attachment applied to usefthereon;

Figure 2 is an elevation of the gasket removed with the air intake pipeattached thereto;

Figure 3 is a horizontal section as seen on the line 3-3 of Fig. 2; and

'Figure 4 is .a vertical section as seen on the line 4: 1: of Fig. 2.

In describing the invention I shall refer to the drawing in whichsimilar reference characters designate. corresponding parts throughoutthe several views, and in which 1 designates the intake manifold ofa'hydrocarbon motor and E2 the carburetor therefor, the latter being ofany preferred type 'or construction;

My improved attachment comprises a gasket ofvelongated type numbered inthe drawing as 3 which is secured in place between the carburetor andthe intake manifold by meansof bolts which extend through two bolt holes4 formed adjacent the ends of the gasket. The central opening 5 in thegasket registers with the exit opening of the carburetor and similaropening of the manifold so that the air and gasoline readily passtherethrough to the motor and this opening is tapered, that is, theedges of the opening are beveled so as to draw the gasoline indirectcontact with the current of air, will appear more fully from thedescription herebelow. v

Extending v longitudinally through the lower portion of the gasket is anair tube 6 formed preferably of copper and intersecting the opening 5toward the wider end thereof. This tube terminates at its inner endwithin the gasket, as clearly shown in dotted lines of Fig. 2 of thedrawing and the portion extending. beyond the gasket is bent in U-shapedformation as shown at 7, the extreme free end of this U-shaped portion'being open. The air is drawn through this open end of the tube andthisU-shaped portion is provided to prevent the escape of gasoline after themotor has stopped, it be- 7 ing obvious that any gasoline which may runback from the intake manifold after the motor has been stopped willdrain into the U-shaped portion of the co-pper tub- Jin-g. When themotor is again started, this excess gasoline will act asa primingcharge,

opening 5 and is of a width equal to the diameter of said opening at thesmaller end no I thereof, as more clearly shown in Fig. 3 of thedrawing. This slot of the width mentioned permits the air to be drawnupwardly when the motor is in operation and thus substantially a curtainof air of a width equal to the innermost diameter of the opening 5 isprovided. This air curtain obviously intersects the flow of gasolinefrom the carburetor to the manifold, thoroughly mixing with saidgasoline, purifying the latter and thoroughly vaporizing it. Obviously,when the gasoline is thoroughly vaporized the motor will develop greaterpower, more speed and carbon will be eliminated or appreciably redtned.

The periphery of the opening 5 at the lower portion thereof is providedwith a restricted slot member 9 in the drawing which leads toward theopening 8 in the tube 6, so that when the motor is stopped any gasolineremaining in the manifold will drain readily into the copper tube 6 andfurther into the U-shaped portion 7 of said tube.

I am aware that others have attempted to accomplish what I claim toaccomplish by my invention, but I am not awarethat the results have beenaccomplished through the specific construction hereabove described andillustrated in the drawing. I am further not aware that anyone has beenable to accomplish the desired results in a manner as eflicient as thatset forth above.

From the foregoing description of the construction of myimproved device,the operation thereof will be readily understood and it will be seenthat I have provided a simple, inexpensive and eflicient means forcarrying out the objects of the invention.

While I have particularly described the elements best adapted to performthe functions set forth, it is obvious that various changes in form,proportion, and in the minor details of construction may be resorted towithout departing from the spirit or sacrificing any of the principlesof the invention.

Having thus described my invention, what I claim is g 1. An auxiliaryair mixing device comprising a gasket adapted to be interposed between acarbureter and intake manifold of an engine, and having a centraltapered opening the-rein, an air pipe longitudinally extending throughthe thickness of said gasket and transversely intersecting the openingof the latter, said pipe being provided with a slot in the portionintersecting the opening, whereby to permit substantially a curtain ofair to be drawn across the inner and for the purposes with a transversegroove, an air pipe pro j ecting longitudinally through the thickness ofthe gasket and extending across the lower portion of said opening, saidpipe having a slot formed therein facing upwardly, whereby to permit anuninterrupted curtain of air to be drawn across the opening in saidgasket, the groove in the wall of said opening leading toward the slotin said pipe to permit draining of gasoline from the manifold when theengine is stopped. I

3. An auxiliary air mixing device comprising a gasket adapted to beinterposed between the carbureter and intake manifold of an engine andprovided with a tapering bore, an air pipe disposed longitudinallythrough the thickness of said gasket and projecting across the bore insaid gasket at the lower portion thereof, the inner end of said pipeterminating within the body of the gasket and the outer end thereof beinformed into an integral enlarged U-shape member to receive gasolinedrained from the manifold at predetermined times, said pipe beingprovided with a restricted slot at its intersection with the aforesaidbore and of a length equal to the diameter of the reduced end of saidbore, as and for the purposes described.

4. An auxiliary air mixing device comprising a gasket provided with atapering bore, the wall of said bore nearest the lower edge of saidgasket being provided with a transverse groove, an air pipe projectedlongitudinally through the gasket and intersecting the aforesaid bore atthe lower portion thereof, said intersecting portion of the pipe beingprovided with a slot of restricted width facing upwardly and of a lengthequal to the diameter of the reduced end of said bore, to permit acurtain of air to be drawn across said bore, the inner end of said pipeterminating in the body of the gasket and the outer end thereof beingformed into an integral enlarged U-shaped member to' one side of saidgasket and in the same vertical plane with the latter, as and for thepurposes described.

In testimony whereof I aflix my signature.

ELDRIDGE A. MoKEEVER.

